./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f12bfc45347636ba11cd9198984e4ca6a9fb471afaf773fd02be6e88eb44e8c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:24:25,942 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:24:26,033 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-02 12:24:26,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:24:26,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:24:26,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:24:26,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:24:26,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:24:26,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:24:26,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:24:26,089 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:24:26,090 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:24:26,090 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:24:26,090 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:24:26,091 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:24:26,091 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:24:26,091 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:24:26,092 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:24:26,092 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:24:26,093 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:24:26,098 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:24:26,098 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:24:26,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:24:26,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:24:26,100 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:24:26,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:24:26,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:24:26,117 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:24:26,117 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:24:26,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:24:26,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:24:26,118 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:24:26,118 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:24:26,118 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:24:26,118 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:24:26,119 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:24:26,119 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:24:26,119 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:24:26,119 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:24:26,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:24:26,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:26,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:24:26,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:24:26,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:24:26,123 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:24:26,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:24:26,123 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:24:26,124 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:24:26,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:24:26,124 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f12bfc45347636ba11cd9198984e4ca6a9fb471afaf773fd02be6e88eb44e8c [2024-11-02 12:24:26,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:24:26,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:24:26,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:24:26,476 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:24:26,477 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:24:26,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c Unable to find full path for "g++" [2024-11-02 12:24:28,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:24:29,033 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:24:29,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c [2024-11-02 12:24:29,042 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/data/516ae4910/490ab0aa0e754a45b257386ac23863f4/FLAG454de521e [2024-11-02 12:24:29,365 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/data/516ae4910/490ab0aa0e754a45b257386ac23863f4 [2024-11-02 12:24:29,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:24:29,370 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:24:29,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:29,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:24:29,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:24:29,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c3301d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29, skipping insertion in model container [2024-11-02 12:24:29,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,414 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:24:29,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:29,633 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:24:29,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:29,678 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:24:29,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29 WrapperNode [2024-11-02 12:24:29,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:29,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:29,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:24:29,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:24:29,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,719 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 110 [2024-11-02 12:24:29,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:29,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:24:29,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:24:29,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:24:29,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:24:29,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:24:29,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:24:29,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:24:29,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (1/1) ... [2024-11-02 12:24:29,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:29,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:29,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:24:29,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:24:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:24:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:24:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:24:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:24:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:24:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:24:29,920 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:24:29,923 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:24:30,769 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-11-02 12:24:30,774 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:24:30,864 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:24:30,865 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:24:30,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:30 BoogieIcfgContainer [2024-11-02 12:24:30,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:24:30,869 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:24:30,869 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:24:30,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:24:30,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:24:29" (1/3) ... [2024-11-02 12:24:30,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1477d023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:30, skipping insertion in model container [2024-11-02 12:24:30,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:29" (2/3) ... [2024-11-02 12:24:30,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1477d023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:30, skipping insertion in model container [2024-11-02 12:24:30,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:30" (3/3) ... [2024-11-02 12:24:30,880 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound5.c [2024-11-02 12:24:30,904 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:24:30,904 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-11-02 12:24:31,017 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:24:31,031 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58825218, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:24:31,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-02 12:24:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 97 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:24:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:24:31,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:31,047 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:24:31,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:31,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:31,058 INFO L85 PathProgramCache]: Analyzing trace with hash 191333, now seen corresponding path program 1 times [2024-11-02 12:24:31,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:31,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656447481] [2024-11-02 12:24:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:31,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:31,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:31,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656447481] [2024-11-02 12:24:31,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656447481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:31,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:31,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:24:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548279872] [2024-11-02 12:24:31,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:31,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:24:31,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:31,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:24:31,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:24:31,319 INFO L87 Difference]: Start difference. First operand has 102 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 97 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:31,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:31,373 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2024-11-02 12:24:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:24:31,376 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-02 12:24:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:31,390 INFO L225 Difference]: With dead ends: 116 [2024-11-02 12:24:31,391 INFO L226 Difference]: Without dead ends: 99 [2024-11-02 12:24:31,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:24:31,403 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:31,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:24:31,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-02 12:24:31,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-02 12:24:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 52 states have (on average 1.9230769230769231) internal successors, (100), 95 states have internal predecessors, (100), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:24:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2024-11-02 12:24:31,468 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 3 [2024-11-02 12:24:31,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:31,468 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2024-11-02 12:24:31,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2024-11-02 12:24:31,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-02 12:24:31,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:31,471 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-02 12:24:31,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:24:31,471 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:31,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:31,473 INFO L85 PathProgramCache]: Analyzing trace with hash 187844, now seen corresponding path program 1 times [2024-11-02 12:24:31,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:31,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014951586] [2024-11-02 12:24:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:31,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:31,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:31,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014951586] [2024-11-02 12:24:31,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014951586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:31,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:31,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:24:31,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483036992] [2024-11-02 12:24:31,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:31,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:24:31,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:24:31,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:31,631 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:31,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:31,701 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2024-11-02 12:24:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:24:31,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-02 12:24:31,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:31,704 INFO L225 Difference]: With dead ends: 99 [2024-11-02 12:24:31,704 INFO L226 Difference]: Without dead ends: 98 [2024-11-02 12:24:31,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:24:31,707 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 103 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:31,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 190 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:24:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-02 12:24:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-02 12:24:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 94 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:24:31,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2024-11-02 12:24:31,721 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 3 [2024-11-02 12:24:31,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:31,721 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2024-11-02 12:24:31,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:31,722 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2024-11-02 12:24:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:24:31,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:31,723 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:24:31,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:24:31,724 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:31,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash 5823212, now seen corresponding path program 1 times [2024-11-02 12:24:31,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:31,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420180430] [2024-11-02 12:24:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:31,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:31,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420180430] [2024-11-02 12:24:31,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420180430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:31,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:31,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:24:31,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133201024] [2024-11-02 12:24:31,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:31,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:24:31,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:31,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:24:31,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:31,826 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:31,884 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2024-11-02 12:24:31,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:24:31,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-02 12:24:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:31,886 INFO L225 Difference]: With dead ends: 114 [2024-11-02 12:24:31,886 INFO L226 Difference]: Without dead ends: 102 [2024-11-02 12:24:31,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:24:31,888 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 3 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:31,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 290 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:24:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-02 12:24:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-02 12:24:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 98 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:24:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2024-11-02 12:24:31,906 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 4 [2024-11-02 12:24:31,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:31,907 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2024-11-02 12:24:31,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:31,908 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2024-11-02 12:24:31,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:24:31,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:31,909 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:24:31,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:24:31,909 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:31,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:31,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1301141134, now seen corresponding path program 1 times [2024-11-02 12:24:31,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:31,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064484777] [2024-11-02 12:24:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:31,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:24:31,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006805200] [2024-11-02 12:24:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:31,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:31,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:31,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:31,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:24:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:32,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:24:32,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:32,255 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:32,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:32,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064484777] [2024-11-02 12:24:32,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:24:32,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006805200] [2024-11-02 12:24:32,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006805200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:32,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:32,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:24:32,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755283952] [2024-11-02 12:24:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:32,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:32,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:32,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:32,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:32,263 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:32,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:32,678 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2024-11-02 12:24:32,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:32,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-02 12:24:32,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:32,680 INFO L225 Difference]: With dead ends: 143 [2024-11-02 12:24:32,680 INFO L226 Difference]: Without dead ends: 134 [2024-11-02 12:24:32,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:32,681 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 28 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:32,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 92 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:24:32,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-02 12:24:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 127. [2024-11-02 12:24:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 121 states have internal predecessors, (140), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:24:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2024-11-02 12:24:32,708 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 6 [2024-11-02 12:24:32,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:32,708 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2024-11-02 12:24:32,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2024-11-02 12:24:32,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:24:32,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:32,709 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:32,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:24:32,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-02 12:24:32,910 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:32,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:32,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1680669547, now seen corresponding path program 1 times [2024-11-02 12:24:32,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:32,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644862240] [2024-11-02 12:24:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:32,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:24:32,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073176219] [2024-11-02 12:24:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:32,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:32,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:32,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:32,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:24:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:32,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:24:32,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:33,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:33,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:33,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644862240] [2024-11-02 12:24:33,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:24:33,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073176219] [2024-11-02 12:24:33,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073176219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:33,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:33,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:24:33,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463670329] [2024-11-02 12:24:33,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:33,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:33,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:33,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:33,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:33,085 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:33,550 INFO L93 Difference]: Finished difference Result 181 states and 221 transitions. [2024-11-02 12:24:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:33,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-02 12:24:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:33,552 INFO L225 Difference]: With dead ends: 181 [2024-11-02 12:24:33,552 INFO L226 Difference]: Without dead ends: 167 [2024-11-02 12:24:33,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:33,554 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 34 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:33,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 85 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:24:33,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-02 12:24:33,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2024-11-02 12:24:33,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 150 states have internal predecessors, (188), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:24:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2024-11-02 12:24:33,580 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 198 transitions. Word has length 7 [2024-11-02 12:24:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:33,581 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 198 transitions. [2024-11-02 12:24:33,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 198 transitions. [2024-11-02 12:24:33,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:24:33,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:33,587 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:33,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 12:24:33,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:33,789 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:33,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:33,790 INFO L85 PathProgramCache]: Analyzing trace with hash 561148464, now seen corresponding path program 1 times [2024-11-02 12:24:33,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:33,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443228032] [2024-11-02 12:24:33,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:33,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:24:33,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512471017] [2024-11-02 12:24:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:33,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:33,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:33,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:24:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:33,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:24:33,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:33,986 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:33,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:33,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443228032] [2024-11-02 12:24:33,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:24:33,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512471017] [2024-11-02 12:24:33,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512471017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:33,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:33,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:24:33,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398170973] [2024-11-02 12:24:33,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:33,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:33,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:33,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:33,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:33,989 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:34,240 INFO L93 Difference]: Finished difference Result 169 states and 205 transitions. [2024-11-02 12:24:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:34,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-02 12:24:34,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:34,242 INFO L225 Difference]: With dead ends: 169 [2024-11-02 12:24:34,242 INFO L226 Difference]: Without dead ends: 168 [2024-11-02 12:24:34,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:34,243 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 24 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:34,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 92 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:24:34,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-02 12:24:34,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 157. [2024-11-02 12:24:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 108 states have (on average 1.7314814814814814) internal successors, (187), 150 states have internal predecessors, (187), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:24:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 197 transitions. [2024-11-02 12:24:34,254 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 197 transitions. Word has length 8 [2024-11-02 12:24:34,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:34,255 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 197 transitions. [2024-11-02 12:24:34,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:34,255 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 197 transitions. [2024-11-02 12:24:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:24:34,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:34,256 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:34,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 12:24:34,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-02 12:24:34,457 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:34,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash 215733261, now seen corresponding path program 1 times [2024-11-02 12:24:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:34,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191189783] [2024-11-02 12:24:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:24:34,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439899446] [2024-11-02 12:24:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:34,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:34,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:34,483 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:34,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:24:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:34,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:24:34,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:34,653 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:34,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:34,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191189783] [2024-11-02 12:24:34,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:24:34,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439899446] [2024-11-02 12:24:34,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439899446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:34,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:34,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:24:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26799943] [2024-11-02 12:24:34,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:34,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:34,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:34,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:34,655 INFO L87 Difference]: Start difference. First operand 157 states and 197 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:34,891 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2024-11-02 12:24:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:34,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-02 12:24:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:34,893 INFO L225 Difference]: With dead ends: 165 [2024-11-02 12:24:34,893 INFO L226 Difference]: Without dead ends: 162 [2024-11-02 12:24:34,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:34,894 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 31 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:34,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 89 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:24:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-02 12:24:34,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2024-11-02 12:24:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 150 states have internal predecessors, (183), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:24:34,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 193 transitions. [2024-11-02 12:24:34,923 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 193 transitions. Word has length 9 [2024-11-02 12:24:34,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:34,923 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 193 transitions. [2024-11-02 12:24:34,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 193 transitions. [2024-11-02 12:24:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 12:24:34,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:34,928 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:34,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:24:35,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-02 12:24:35,129 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:35,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1902203438, now seen corresponding path program 1 times [2024-11-02 12:24:35,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:35,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484845774] [2024-11-02 12:24:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:35,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:35,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:35,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484845774] [2024-11-02 12:24:35,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484845774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:35,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:35,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:24:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521519594] [2024-11-02 12:24:35,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:35,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:24:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:35,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:24:35,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:35,269 INFO L87 Difference]: Start difference. First operand 157 states and 193 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:37,121 INFO L93 Difference]: Finished difference Result 265 states and 318 transitions. [2024-11-02 12:24:37,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:24:37,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-02 12:24:37,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:37,122 INFO L225 Difference]: With dead ends: 265 [2024-11-02 12:24:37,123 INFO L226 Difference]: Without dead ends: 264 [2024-11-02 12:24:37,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:37,124 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 87 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:37,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 159 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-02 12:24:37,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-02 12:24:37,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 181. [2024-11-02 12:24:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 131 states have (on average 1.6946564885496183) internal successors, (222), 173 states have internal predecessors, (222), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:24:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 234 transitions. [2024-11-02 12:24:37,148 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 234 transitions. Word has length 10 [2024-11-02 12:24:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:37,148 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 234 transitions. [2024-11-02 12:24:37,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 234 transitions. [2024-11-02 12:24:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:24:37,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:37,149 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:37,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:24:37,150 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:37,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1161235631, now seen corresponding path program 1 times [2024-11-02 12:24:37,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:37,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126015038] [2024-11-02 12:24:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:37,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:37,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:37,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126015038] [2024-11-02 12:24:37,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126015038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:37,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:37,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:24:37,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004286382] [2024-11-02 12:24:37,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:37,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:24:37,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:37,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:24:37,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:37,519 INFO L87 Difference]: Start difference. First operand 181 states and 234 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:40,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:40,351 INFO L93 Difference]: Finished difference Result 265 states and 316 transitions. [2024-11-02 12:24:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:24:40,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-02 12:24:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:40,352 INFO L225 Difference]: With dead ends: 265 [2024-11-02 12:24:40,352 INFO L226 Difference]: Without dead ends: 264 [2024-11-02 12:24:40,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:40,353 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 87 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:40,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 158 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-02 12:24:40,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-02 12:24:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 181. [2024-11-02 12:24:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 131 states have (on average 1.6793893129770991) internal successors, (220), 173 states have internal predecessors, (220), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:24:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 232 transitions. [2024-11-02 12:24:40,364 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 232 transitions. Word has length 11 [2024-11-02 12:24:40,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:40,365 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 232 transitions. [2024-11-02 12:24:40,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:40,365 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 232 transitions. [2024-11-02 12:24:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-02 12:24:40,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:40,366 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:40,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:24:40,366 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:40,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:40,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1638566260, now seen corresponding path program 1 times [2024-11-02 12:24:40,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:40,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735473285] [2024-11-02 12:24:40,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:40,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:24:40,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642112016] [2024-11-02 12:24:40,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:40,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:40,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:40,383 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:40,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:24:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:40,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:24:40,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:40,546 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:40,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735473285] [2024-11-02 12:24:40,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:24:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642112016] [2024-11-02 12:24:40,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642112016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:40,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:40,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:24:40,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757237231] [2024-11-02 12:24:40,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:40,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:40,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:40,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:40,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:40,550 INFO L87 Difference]: Start difference. First operand 181 states and 232 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:40,580 INFO L93 Difference]: Finished difference Result 181 states and 232 transitions. [2024-11-02 12:24:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:40,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-02 12:24:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:40,581 INFO L225 Difference]: With dead ends: 181 [2024-11-02 12:24:40,582 INFO L226 Difference]: Without dead ends: 179 [2024-11-02 12:24:40,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:40,583 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 83 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:40,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 95 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:24:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-02 12:24:40,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-02 12:24:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 131 states have (on average 1.6259541984732824) internal successors, (213), 171 states have internal predecessors, (213), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:24:40,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 225 transitions. [2024-11-02 12:24:40,598 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 225 transitions. Word has length 12 [2024-11-02 12:24:40,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:40,598 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 225 transitions. [2024-11-02 12:24:40,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:40,598 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 225 transitions. [2024-11-02 12:24:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:24:40,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:40,599 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:40,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 12:24:40,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-02 12:24:40,800 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:40,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash -744053423, now seen corresponding path program 1 times [2024-11-02 12:24:40,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:40,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083176430] [2024-11-02 12:24:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:40,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:24:40,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637830363] [2024-11-02 12:24:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:40,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:40,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:40,825 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:40,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 12:24:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:40,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:24:40,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:40,987 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:40,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:40,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083176430] [2024-11-02 12:24:40,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:24:40,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637830363] [2024-11-02 12:24:40,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637830363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:40,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:40,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:24:40,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963290050] [2024-11-02 12:24:40,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:40,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:40,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:40,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:40,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:40,989 INFO L87 Difference]: Start difference. First operand 179 states and 225 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:41,016 INFO L93 Difference]: Finished difference Result 179 states and 225 transitions. [2024-11-02 12:24:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:41,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-02 12:24:41,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:41,019 INFO L225 Difference]: With dead ends: 179 [2024-11-02 12:24:41,019 INFO L226 Difference]: Without dead ends: 175 [2024-11-02 12:24:41,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:41,020 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 82 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:41,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 95 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:24:41,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-02 12:24:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-02 12:24:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.5813953488372092) internal successors, (204), 167 states have internal predecessors, (204), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:24:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 216 transitions. [2024-11-02 12:24:41,032 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 216 transitions. Word has length 13 [2024-11-02 12:24:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:41,032 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 216 transitions. [2024-11-02 12:24:41,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:41,032 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 216 transitions. [2024-11-02 12:24:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:24:41,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:41,034 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:41,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-02 12:24:41,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:41,235 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:41,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:41,235 INFO L85 PathProgramCache]: Analyzing trace with hash 864060060, now seen corresponding path program 1 times [2024-11-02 12:24:41,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:41,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562954348] [2024-11-02 12:24:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:41,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:41,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:41,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562954348] [2024-11-02 12:24:41,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562954348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:41,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:41,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:24:41,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809286395] [2024-11-02 12:24:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:41,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:41,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:41,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:41,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:41,396 INFO L87 Difference]: Start difference. First operand 175 states and 216 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:41,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:41,639 INFO L93 Difference]: Finished difference Result 252 states and 317 transitions. [2024-11-02 12:24:41,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:41,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-02 12:24:41,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:41,641 INFO L225 Difference]: With dead ends: 252 [2024-11-02 12:24:41,641 INFO L226 Difference]: Without dead ends: 250 [2024-11-02 12:24:41,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:41,642 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 56 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:41,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 138 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:24:41,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-02 12:24:41,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 224. [2024-11-02 12:24:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 177 states have (on average 1.6497175141242937) internal successors, (292), 215 states have internal predecessors, (292), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-02 12:24:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 306 transitions. [2024-11-02 12:24:41,659 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 306 transitions. Word has length 23 [2024-11-02 12:24:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:41,659 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 306 transitions. [2024-11-02 12:24:41,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 306 transitions. [2024-11-02 12:24:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:24:41,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:41,660 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:41,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:24:41,661 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:41,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:41,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1292573803, now seen corresponding path program 1 times [2024-11-02 12:24:41,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:41,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541763915] [2024-11-02 12:24:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:41,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:24:41,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208955607] [2024-11-02 12:24:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:41,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:41,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:41,697 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:41,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 12:24:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:41,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:24:41,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:41,872 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:41,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:41,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541763915] [2024-11-02 12:24:41,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:24:41,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208955607] [2024-11-02 12:24:41,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208955607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:41,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:41,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:24:41,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462577557] [2024-11-02 12:24:41,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:41,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:41,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:41,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:41,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:41,875 INFO L87 Difference]: Start difference. First operand 224 states and 306 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:42,362 INFO L93 Difference]: Finished difference Result 275 states and 377 transitions. [2024-11-02 12:24:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-02 12:24:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:42,365 INFO L225 Difference]: With dead ends: 275 [2024-11-02 12:24:42,365 INFO L226 Difference]: Without dead ends: 271 [2024-11-02 12:24:42,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:42,366 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 23 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:42,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 106 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:24:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-02 12:24:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 252. [2024-11-02 12:24:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 204 states have (on average 1.6470588235294117) internal successors, (336), 242 states have internal predecessors, (336), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:24:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 352 transitions. [2024-11-02 12:24:42,379 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 352 transitions. Word has length 23 [2024-11-02 12:24:42,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:42,380 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 352 transitions. [2024-11-02 12:24:42,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 352 transitions. [2024-11-02 12:24:42,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:24:42,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:42,381 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:42,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-02 12:24:42,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-02 12:24:42,586 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:42,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash 999959660, now seen corresponding path program 1 times [2024-11-02 12:24:42,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:42,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380679432] [2024-11-02 12:24:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:42,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:42,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:42,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380679432] [2024-11-02 12:24:42,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380679432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:42,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:42,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:24:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205667888] [2024-11-02 12:24:42,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:42,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:24:42,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:42,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:24:42,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:42,687 INFO L87 Difference]: Start difference. First operand 252 states and 352 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:43,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:43,263 INFO L93 Difference]: Finished difference Result 335 states and 444 transitions. [2024-11-02 12:24:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:24:43,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-02 12:24:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:43,265 INFO L225 Difference]: With dead ends: 335 [2024-11-02 12:24:43,265 INFO L226 Difference]: Without dead ends: 334 [2024-11-02 12:24:43,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:43,267 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 109 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:43,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 172 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:24:43,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-02 12:24:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 262. [2024-11-02 12:24:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 214 states have (on average 1.6401869158878504) internal successors, (351), 252 states have internal predecessors, (351), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:24:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 367 transitions. [2024-11-02 12:24:43,282 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 367 transitions. Word has length 24 [2024-11-02 12:24:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:43,283 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 367 transitions. [2024-11-02 12:24:43,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 367 transitions. [2024-11-02 12:24:43,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:24:43,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:43,287 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:43,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-02 12:24:43,287 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:43,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:43,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1415082349, now seen corresponding path program 1 times [2024-11-02 12:24:43,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:43,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897539819] [2024-11-02 12:24:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:43,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:24:43,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417695444] [2024-11-02 12:24:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:43,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:43,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:43,309 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:43,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 12:24:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:43,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:24:43,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:43,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:43,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:43,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:43,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897539819] [2024-11-02 12:24:43,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:24:43,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417695444] [2024-11-02 12:24:43,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417695444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:43,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:43,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:24:43,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096927717] [2024-11-02 12:24:43,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:43,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:43,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:43,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:43,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:43,470 INFO L87 Difference]: Start difference. First operand 262 states and 367 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:43,866 INFO L93 Difference]: Finished difference Result 278 states and 374 transitions. [2024-11-02 12:24:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:43,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-02 12:24:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:43,868 INFO L225 Difference]: With dead ends: 278 [2024-11-02 12:24:43,868 INFO L226 Difference]: Without dead ends: 274 [2024-11-02 12:24:43,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:43,869 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 38 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:43,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 68 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:24:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-02 12:24:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 262. [2024-11-02 12:24:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 214 states have (on average 1.6168224299065421) internal successors, (346), 252 states have internal predecessors, (346), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:24:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 362 transitions. [2024-11-02 12:24:43,883 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 362 transitions. Word has length 24 [2024-11-02 12:24:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:43,883 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 362 transitions. [2024-11-02 12:24:43,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 362 transitions. [2024-11-02 12:24:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:24:43,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:43,885 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:43,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-02 12:24:44,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-02 12:24:44,090 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:44,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash 933978495, now seen corresponding path program 1 times [2024-11-02 12:24:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:44,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818421898] [2024-11-02 12:24:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:44,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:44,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:44,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818421898] [2024-11-02 12:24:44,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818421898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:44,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:44,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:24:44,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040895140] [2024-11-02 12:24:44,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:44,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:24:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:44,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:24:44,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:44,298 INFO L87 Difference]: Start difference. First operand 262 states and 362 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:45,760 INFO L93 Difference]: Finished difference Result 335 states and 436 transitions. [2024-11-02 12:24:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:24:45,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-02 12:24:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:45,762 INFO L225 Difference]: With dead ends: 335 [2024-11-02 12:24:45,762 INFO L226 Difference]: Without dead ends: 334 [2024-11-02 12:24:45,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:45,763 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 95 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:45,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 169 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-02 12:24:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-02 12:24:45,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 264. [2024-11-02 12:24:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 216 states have (on average 1.6111111111111112) internal successors, (348), 254 states have internal predecessors, (348), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:24:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 364 transitions. [2024-11-02 12:24:45,777 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 364 transitions. Word has length 25 [2024-11-02 12:24:45,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:45,778 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 364 transitions. [2024-11-02 12:24:45,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:45,778 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 364 transitions. [2024-11-02 12:24:45,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:24:45,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:45,779 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:45,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-02 12:24:45,779 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:45,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:45,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1332048365, now seen corresponding path program 1 times [2024-11-02 12:24:45,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:45,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727487520] [2024-11-02 12:24:45,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:45,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:45,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:45,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727487520] [2024-11-02 12:24:45,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727487520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:45,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:45,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:24:45,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944581013] [2024-11-02 12:24:45,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:45,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:24:45,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:24:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:45,950 INFO L87 Difference]: Start difference. First operand 264 states and 364 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:46,805 INFO L93 Difference]: Finished difference Result 347 states and 499 transitions. [2024-11-02 12:24:46,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:24:46,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-02 12:24:46,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:46,807 INFO L225 Difference]: With dead ends: 347 [2024-11-02 12:24:46,807 INFO L226 Difference]: Without dead ends: 345 [2024-11-02 12:24:46,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:46,808 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 121 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:46,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 103 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 12:24:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-02 12:24:46,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 270. [2024-11-02 12:24:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 222 states have (on average 1.5990990990990992) internal successors, (355), 260 states have internal predecessors, (355), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:24:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 371 transitions. [2024-11-02 12:24:46,823 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 371 transitions. Word has length 25 [2024-11-02 12:24:46,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:46,824 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 371 transitions. [2024-11-02 12:24:46,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 371 transitions. [2024-11-02 12:24:46,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:24:46,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:46,825 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:46,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-02 12:24:46,825 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:46,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:46,826 INFO L85 PathProgramCache]: Analyzing trace with hash 917879981, now seen corresponding path program 1 times [2024-11-02 12:24:46,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:46,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217634808] [2024-11-02 12:24:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:46,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:46,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:46,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217634808] [2024-11-02 12:24:46,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217634808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:46,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:46,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:24:46,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829343060] [2024-11-02 12:24:46,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:46,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:24:46,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:46,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:24:46,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:46,908 INFO L87 Difference]: Start difference. First operand 270 states and 371 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:47,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:47,626 INFO L93 Difference]: Finished difference Result 335 states and 432 transitions. [2024-11-02 12:24:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:24:47,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-02 12:24:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:47,630 INFO L225 Difference]: With dead ends: 335 [2024-11-02 12:24:47,630 INFO L226 Difference]: Without dead ends: 334 [2024-11-02 12:24:47,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:47,633 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 103 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:47,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 186 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:24:47,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-02 12:24:47,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 279. [2024-11-02 12:24:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 231 states have (on average 1.5974025974025974) internal successors, (369), 269 states have internal predecessors, (369), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:24:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 385 transitions. [2024-11-02 12:24:47,649 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 385 transitions. Word has length 25 [2024-11-02 12:24:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:47,650 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 385 transitions. [2024-11-02 12:24:47,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 385 transitions. [2024-11-02 12:24:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 12:24:47,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:47,653 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:47,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-02 12:24:47,653 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:47,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:47,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1656173507, now seen corresponding path program 1 times [2024-11-02 12:24:47,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:47,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14970281] [2024-11-02 12:24:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:47,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:47,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:47,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14970281] [2024-11-02 12:24:47,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14970281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:47,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:47,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:24:47,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904938451] [2024-11-02 12:24:47,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:47,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:24:47,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:47,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:24:47,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:47,830 INFO L87 Difference]: Start difference. First operand 279 states and 385 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:48,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:48,490 INFO L93 Difference]: Finished difference Result 288 states and 392 transitions. [2024-11-02 12:24:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:24:48,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-02 12:24:48,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:48,492 INFO L225 Difference]: With dead ends: 288 [2024-11-02 12:24:48,492 INFO L226 Difference]: Without dead ends: 286 [2024-11-02 12:24:48,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:24:48,494 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 212 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:48,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 84 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:24:48,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-02 12:24:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 279. [2024-11-02 12:24:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 231 states have (on average 1.5844155844155845) internal successors, (366), 269 states have internal predecessors, (366), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:24:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 382 transitions. [2024-11-02 12:24:48,518 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 382 transitions. Word has length 26 [2024-11-02 12:24:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:48,518 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 382 transitions. [2024-11-02 12:24:48,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:48,519 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 382 transitions. [2024-11-02 12:24:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 12:24:48,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:48,520 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:48,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-02 12:24:48,521 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:48,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1610491537, now seen corresponding path program 1 times [2024-11-02 12:24:48,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:48,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086159235] [2024-11-02 12:24:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:48,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:48,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:48,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086159235] [2024-11-02 12:24:48,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086159235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:48,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:48,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:24:48,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910966775] [2024-11-02 12:24:48,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:48,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:24:48,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:48,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:24:48,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:48,707 INFO L87 Difference]: Start difference. First operand 279 states and 382 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:49,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:49,947 INFO L93 Difference]: Finished difference Result 335 states and 426 transitions. [2024-11-02 12:24:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:24:49,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-02 12:24:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:49,949 INFO L225 Difference]: With dead ends: 335 [2024-11-02 12:24:49,949 INFO L226 Difference]: Without dead ends: 334 [2024-11-02 12:24:49,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:49,950 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 102 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:49,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 180 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-02 12:24:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-02 12:24:49,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 281. [2024-11-02 12:24:49,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 233 states have (on average 1.5793991416309012) internal successors, (368), 271 states have internal predecessors, (368), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:24:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 384 transitions. [2024-11-02 12:24:49,967 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 384 transitions. Word has length 26 [2024-11-02 12:24:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:49,967 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 384 transitions. [2024-11-02 12:24:49,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 384 transitions. [2024-11-02 12:24:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-02 12:24:49,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:49,968 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:49,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-02 12:24:49,969 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:49,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1540396816, now seen corresponding path program 1 times [2024-11-02 12:24:49,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:49,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302631658] [2024-11-02 12:24:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:49,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:50,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:50,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302631658] [2024-11-02 12:24:50,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302631658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:24:50,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983587281] [2024-11-02 12:24:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:50,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:50,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:50,077 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:50,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-02 12:24:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:50,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:24:50,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:50,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:50,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983587281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:50,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:24:50,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-02 12:24:50,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837575985] [2024-11-02 12:24:50,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:50,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:24:50,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:50,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:24:50,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:24:50,211 INFO L87 Difference]: Start difference. First operand 281 states and 384 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:50,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:50,267 INFO L93 Difference]: Finished difference Result 294 states and 397 transitions. [2024-11-02 12:24:50,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:24:50,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-02 12:24:50,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:50,270 INFO L225 Difference]: With dead ends: 294 [2024-11-02 12:24:50,271 INFO L226 Difference]: Without dead ends: 293 [2024-11-02 12:24:50,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:24:50,272 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 77 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:50,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 297 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:24:50,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-02 12:24:50,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 288. [2024-11-02 12:24:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 238 states have (on average 1.546218487394958) internal successors, (368), 277 states have internal predecessors, (368), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-02 12:24:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 388 transitions. [2024-11-02 12:24:50,290 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 388 transitions. Word has length 27 [2024-11-02 12:24:50,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:50,290 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 388 transitions. [2024-11-02 12:24:50,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:50,291 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 388 transitions. [2024-11-02 12:24:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-02 12:24:50,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:50,291 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:50,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-02 12:24:50,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:50,496 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-02 12:24:50,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:50,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1442378642, now seen corresponding path program 1 times [2024-11-02 12:24:50,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:50,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660866379] [2024-11-02 12:24:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:50,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:24:50,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910156869] [2024-11-02 12:24:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:50,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:50,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:50,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:50,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9196a0b4-fde3-4a79-93fb-cbf6f30b61bb/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-02 12:24:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:50,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-02 12:24:50,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:51,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:24:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:54,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:54,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660866379] [2024-11-02 12:24:54,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:24:54,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910156869] [2024-11-02 12:24:54,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910156869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:24:54,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1973234158] [2024-11-02 12:24:54,139 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 12:24:54,139 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:24:54,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:24:54,148 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:24:54,149 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs